List of acronyms: Y

• Y2K – (i) Year Two Thousand == YA ==

• yA – (s) Yoctoampere • Ya – (s) Yottayear • YA • (s) Yottaampere • (i) Young Adult • YAC – (a/i) Youth-Adult Committee • YAFLA – (a) Yet Another Five Letter Abbreviation • YAP – (a) Young Aspiring Professional • YaBPr – (a) Yet another Brother Pat rant • YABSLAG – (a) Yet another boy singing like a girl == YB ==

• Yb – (s) Ytterbium • YB – (i) Youcef Benzouada (Southern Algerian name) == YC ==

• yC – (s) Yoctocoulomb • YC – (s) Yottacoulomb == YD ==

• YD – (s) People's Democratic Republic of Yemen (ISO 3166 digram, obsolete 1990) • YDS – (i) Yosemite Decimal System (climbing) == YE ==

• YE – (s) Yemen (ISO 3166 digram) • YEM – (s) Yemen (ISO 3166 trigram) – Manitowaning/Manitoulin East Municipal Airport IATA airport code • YER – (s) Yemeni rial (ISO 4217 currency code) == YF ==

• yF – (s) Yoctofarad • YF – (s) Yottafarad == YG ==

• yg – (s) Yoctogram • Yg – (s) Yottagram • YGM – You've got mail • Ygo – (i) Yu-Gi-Oh! • YGCO – (i) Yamaneko Group of Comet Observers == YH ==

• yH – (s) Yoctohenry • YH – (s) Yottahenry • YHS – Ya Hoor sur! • YHBT – (i) You Have Been Trolled • YHIH1 – (a) You Heard It Here First (lowercase: yhih1, pronounced yi-hi) • YHII – You Have It Inside == YI ==

• yi – (s) Yiddish language (ISO 639-1 code) • Yi – (s) Yobi • YI – (s) Serbia and Montenegro (deprecated FIPS 10-4 country code, now RB (Serbia) and MJ (Montenegro)) • yid – (s) Yiddish language (ISO 639-2 code) • YIH – (a) Yiff In Hell • YILP – (a) Youth Integration Livelihood Improvement Project • Yippie – (p) Youth International Party + suffix == YJ ==

• yJ – (s) Yoctojoule • YJ – (s) Yottajoule == YK ==

• yK – (s) Yoctokelvin • YK – (s) Yottakelvin • YKYFCW – You know you're from Christchurch when (post-earthquake joke) == YL ==

• yL – (s) Yoctolitre • YL – (s) Yottalitre == YM ==

• ym – (s) Yoctometre • Ym – (s) Yottametre • YM – (s) Yemen (FIPS 10-4 country code) – (i) Your Magazine (originally Young Miss, later Young & Modern) • YMCA – (i) Young Men's Christian Association • YMD – (s) People's Democratic Republic of Yemen (ISO 3166 trigram, obsolete 1990) • YMMD – (i) You Make My Day • YMMV – (i) Your Mileage May Vary (adapted from the EPA's automobile mileage estimates, where it is used to convey the original meaning, "results may vary"); but (now) when used as an idiom, it -- (either the acronym "YMMV" or the 4 words) -- can instead mean (this e.g. comes from wikt:your mileage may vary#Phrase:) "this is just my opinion, your opinion may be different". == YN ==

• yN – (s) Yoctonewton • YN – (s) Yottanewton • YNWA – reference to Liverpool F.C.'s sports anthem, the 1945 show tune ''You'll Never Walk Alone'' == YO ==

• yo – (s) Yoruba language (ISO 639-1 code) • YO – (s) former Yugoslavia (NATO country code, obsolete 1993) • YOLO – (a) You Only Live Once • yor – (s) Yoruba language (ISO 639-2 code) == YP ==

• YPA – (i) Yards per Pass Attempt (football statistic) • YPG – (i) Yekîneyên Parastina Gel (Kurdish, "People's Protection Units" or "People's Defense Units") • YPIO – (a) Your Problem Is Obvious • YPO – (a) Young Presidents' Organization == YR ==

• YRR – (i) "Young, Restless, and Reformed", an alternative name for the New Calvinist movement == YS ==

• ys – (s) Yoctosecond • yS – (s) Yoctosiemens • Ys – (s) Yottasecond • YS – (s) Yottasiemens • YSA • (i) Young Single Adult, a designation used by the LDS Church for single adults under 30 • Young Socialist Alliance • Youth Service America == YT ==

• yT – (s) Yoctotesla • YT • (s) Mayotte (ISO 3166 digram) • Yottatesla • Yukon Territory (postal symbol) • YTD – (i) Year-To-Date • YTM – (i) Yield to Maturity • YTS – (i) Youth Training Scheme • YTT – Yoshi Topsy-Turvy • YT – YouTube == YU ==